S-91280A271 M16 x 55 mm ISO 4017, DIN 933 Medium-Strength Metric Class 8.8 Steel Hex Head Screws
Medium-Strength Metric Class 8.8 Steel Hex Head Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior load-bearing capacity with Class 8.8 strength grade and 110,000 psi tensile strength for demanding industrial applications
- Enhanced corrosion resistance through black steel construction, extending service life in harsh environments
- Quick and secure installation with external hex drive and 24mm head width for efficient torque application
- Reliable thread engagement through Class 6g thread fit and coarse 2mm pitch, reducing cross-threading risks
- Full-length fastening capability with complete threading along the 55mm length for maximum grip range
- Global compatibility with ISO 4017 (DIN 933) metric standards, ensuring interchangeability across international projects
- Environmental compliance meeting RoHS 3 and REACH regulations for safe use in regulated industries
Professional Applications & Engineering Value
This M16 hex head screw delivers exceptional engineering value through its Class 8.8 steel construction and fully threaded design, specifically engineered to address common industrial fastening challenges. The metric coarse threading with 2mm pitch provides superior resistance to vibration loosening while enabling faster assembly in heavy machinery, structural steelwork, and manufacturing equipment. The external hex drive combined with the 24mm head width ensures maximum torque transmission without stripping, critical for high-stress applications where fastener integrity is paramount. With Rockwell C21 hardness and 110,000 psi tensile strength, this black steel fastener maintains structural integrity under extreme loads, making it ideal for construction, automotive assembly, and industrial maintenance where reliability cannot be compromised.
Specification Summary & Compliance
This fully threaded hex head screw features precise M16 x 2mm metric coarse threading with Class 6g thread fit tolerance according to ISO standards. Manufacturing complies with ISO 4017 (DIN 933) specifications for dimensional accuracy and mechanical properties. The fastener meets RoHS 3 (2015/863/EU) compliance for hazardous substance restrictions and REACH (EC 1907/2006) regulations for chemical safety, ensuring suitability for international industrial markets and environmentally conscious applications.
